kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 14065 Comm: syz-executor.5 Not tainted 4.19.166-syzkaller #0 wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:ieee80211_multicast_to_unicast net/mac80211/tx.c:3752 [inline] RIP: 0010:ieee80211_subif_start_xmit+0x24b/0xef0 net/mac80211/tx.c:3836 Code: 03 80 3c 02 00 0f 85 3c 0c 00 00 49 8b 9f 80 14 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d bb d8 01 00 00 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 06 0f 8e 19 0c 00 00 0f b6 9b d8 01 00 00 31 RSP: 0018:ffff8880ba007390 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff87c2f58a RDX: 000000000000003b RSI: ffffffff87c2f61a RDI: 00000000000001d8 RBP: ffff88809aaeb580 R08: 0000000000000000 R09: 0000000000000004 R10: 0000000000000005 R11: 0000000000000000 R12: ffffffff896711e0 R13: ffff88805067a9c2 R14: ffff8880a976ded0 R15: ffff8880a976de00 FS: 0000000001a17940(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000016b538d CR3: 0000000048222000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __netdev_start_xmit include/linux/netdevice.h:4333 [inline] netdev_start_xmit include/linux/netdevice.h:4347 [inline] xmit_one net/core/dev.c:3256 [inline] dev_hard_start_xmit+0x1a8/0x920 net/core/dev.c:3272 sch_direct_xmit+0x2d6/0xf50 net/sched/sch_generic.c:332 qdisc_restart net/sched/sch_generic.c:395 [inline] __qdisc_run+0x4d0/0x1640 net/sched/sch_generic.c:403 qdisc_run include/net/pkt_sched.h:120 [inline] __dev_xmit_skb net/core/dev.c:3451 [inline] __dev_queue_xmit+0x2102/0x2e00 net/core/dev.c:3807 neigh_hh_output include/net/neighbour.h:491 [inline] neigh_output include/net/neighbour.h:499 [inline] ip6_finish_output2+0xde7/0x2290 net/ipv6/ip6_output.c:120 ip6_finish_output+0x7eb/0xc10 net/ipv6/ip6_output.c:154 NF_HOOK_COND include/linux/netfilter.h:278 [inline] ip6_output+0x205/0x770 net/ipv6/ip6_output.c:171 dst_output include/net/dst.h:455 [inline] NF_HOOK include/linux/netfilter.h:289 [inline] mld_sendpack+0x674/0x1060 net/ipv6/mcast.c:1684 mld_send_cr net/ipv6/mcast.c:1980 [inline] mld_ifc_timer_expire+0x616/0xdf0 net/ipv6/mcast.c:2479 call_timer_fn+0x177/0x700 kernel/time/timer.c:1338 expire_timers+0x243/0x4e0 kernel/time/timer.c:1375 __run_timers kernel/time/timer.c:1696 [inline] run_timer_softirq+0x21c/0x670 kernel/time/timer.c:1709 __do_softirq+0x26c/0x9a0 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x215/0x260 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:545 [inline] smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1094 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894 RIP: 0010:compound_head include/linux/page-flags.h:144 [inline] RIP: 0010:get_page include/linux/mm.h:931 [inline] RIP: 0010:copy_one_pte mm/memory.c:1052 [inline] RIP: 0010:copy_pte_range mm/memory.c:1114 [inline] RIP: 0010:copy_pmd_range mm/memory.c:1165 [inline] RIP: 0010:copy_pud_range mm/memory.c:1199 [inline] RIP: 0010:copy_p4d_range mm/memory.c:1221 [inline] RIP: 0010:copy_page_range+0x101c/0x2ff0 mm/memory.c:1283 Code: 85 c0 49 89 c6 0f 84 69 06 00 00 e8 6e d7 d5 ff 4d 8d 7e 08 4c 89 f8 48 c1 e8 03 42 80 3c 28 00 0f 85 a1 19 00 00 49 8b 46 08 <31> ff 4c 89 f5 49 89 c4 48 89 84 24 e8 00 00 00 41 83 e4 01 4c 89 RSP: 0018:ffff88805689fa28 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: dead000000000100 RBX: 0000000000000010 RCX: ffffffff818e123c RDX: 0000000000000000 RSI: ffffffff818ef9a2 RDI: 0000000000000006 RBP: 800000009dc03007 R08: 0000000000000001 R09: 000000000023ffff R10: 0000000000000006 R11: 00000000e00955ac R12: 8000000000000007 R13: dffffc0000000000 R14: ffffea00027700c0 R15: ffffea00027700c8 dup_mmap kernel/fork.c:549 [inline] dup_mm kernel/fork.c:1288 [inline] copy_mm kernel/fork.c:1344 [inline] copy_process.part.0+0x58fd/0x8200 kernel/fork.c:1916 copy_process kernel/fork.c:1713 [inline] _do_fork+0x22f/0xf30 kernel/fork.c:2228 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45c7ea Code: f7 d8 64 89 04 25 d4 02 00 00 64 4c 8b 0c 25 10 00 00 00 31 d2 4d 8d 91 d0 02 00 00 31 f6 bf 11 00 20 01 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 f5 00 00 00 85 c0 41 89 c5 0f 85 fc 00 00 RSP: 002b:00007ffee5efca10 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007ffee5efca10 RCX: 000000000045c7ea RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 00007ffee5efca50 R08: 0000000000000001 R09: 0000000001a17940 R10: 0000000001a17c10 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000 Modules linked in: ---[ end trace d31861d39f2db781 ]--- RIP: 0010:ieee80211_multicast_to_unicast net/mac80211/tx.c:3752 [inline] RIP: 0010:ieee80211_subif_start_xmit+0x24b/0xef0 net/mac80211/tx.c:3836 Code: 03 80 3c 02 00 0f 85 3c 0c 00 00 49 8b 9f 80 14 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d bb d8 01 00 00 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 06 0f 8e 19 0c 00 00 0f b6 9b d8 01 00 00 31 RSP: 0018:ffff8880ba007390 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff87c2f58a RDX: 000000000000003b RSI: ffffffff87c2f61a RDI: 00000000000001d8 RBP: ffff88809aaeb580 R08: 0000000000000000 R09: 0000000000000004 R10: 0000000000000005 R11: 0000000000000000 R12: ffffffff896711e0 R13: ffff88805067a9c2 R14: ffff8880a976ded0 R15: ffff8880a976de00 FS: 0000000001a17940(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000016b538d CR3: 0000000048222000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400